Phonograph



Nov. 6, 1923 1,473,363

' E. J. TOMLINSON PHONOGRA Pr;

Filed 1 3 4 sheets-sheet 2 f2 R m W. w

iawum J 76/12/1050,?

TTORNEY IN VLWIOR ORNEY Nov. 6, 1923. 1 ,473,363

E. TOMLINSON PHONOGRAPH Filed Jan, 8, 1920 4 Sheets-Sheet 4 [mumv h 2 V I, I I I IIIIIIIIII" IN VE N TUR 502mm J Em/mswi AT TURNE '2" Patented Nov. 6, 1923 UNlTED serum ossics.

EDWAIRD J. TOMLINSON, 0F NEWARK. JERSEY, ASSIGNUR T0 SPLITDORF ELEC TRIBAL. COMPANY. 035

XIEWABK, NEW JERSEY.

YHGNOGRAPH.

Application filed January To (ZZZ whom it may omicem:

it known that l. EDWARD J.-To:uniu-- sort. :1 citizen of the United States. residing at Newark, in the county of Ess u. Fitute of New Jersey, have invented certain new and useful Improvements in Phonogrsphs, of which the following is s description. reference being had to the accompanying; draw-- ing and to the figures of reference marked thereon.

This invention relates to electrically operuted phonographs and as iilustrsteiii isper .ticularly adapted for use in playing a. sec-- 0rd in the form of a plate or flat disk.

It is the principal object of my invention to provide a phonograph in which the sound record body is cm'riedon a, rotatable supportelectrically driven in such a, Way as to insure a constant and uniform i'otative speed as woli as giving'quietness in operation.

in many types of electrically operated phonogrephs the torque is not uniform and the tempo of the played record is seriously impaired. It is, therefore, one of the ohjects of my invention to provide a motor which will give uniform tempo. 1

Another object of my invention is to provide on electric phonograph motor which is self-starting. that is to say, no, additional starting mechanism is required to give the rotative part carrying; the sound record on initial starting impulse as is verycoinmon in phonograph motors.

Another object of my invention is to provide a phonograph motor which aside from being self starting will come up to its normal running speed within a veny brief in tervulof time, so that, inthe us el method of placing the needle on the record. the motor has attained its normal running speed before the needle has reached, the playing portion of the record.

Another oh ect of my invention is to provide a phonogi'suh mote-c Wl'livil is nest and computes end. oi rigid construction, all oi which tends to produce long life of the in- Utheiand further objects of my invention will he apparent to one sltilied in the ext 8, 1920. Serial No. 350,219.

after astudy of the specification taken in connection with the annexed drawings which constitutes a part thereof, wherein- Figure 3 is a side elevation of the motor in the mounting plate with a portion of the sound record body and support shown in section.

Figure 4 is a top View ofFiguro 1 on a smaller scale but with the two cover plates removed and the rotatable member withdrawn.

Figure 5 is a section along the line 5-5 of Fig. 1. I

Figure 6 shows a, plan view of the T9- tatable member.

Figure 7 is a view on the line 7-? .of Fig. {3 with the armature and field windings removed for the sake of clems'ness.

Figure 8 illustrates diagrammatically one method of connecting the mechanism of the motor.

Figure 9 shows another method of wiring the motor. I

Figure 10 shows a still further modification of internal connections.

Referring now to the details wherein like numbers refer to corresponding parts in the various Views 1 illustrates u. cup-shaped casing from which extends the pocket 2. The casing 1 has lugs 3 with hole, 4 therein by which the casingis arried on e Frame or mounting plate 5 by means of suitable screws 6 and bushings 7 preferably of soft ruh'oei' wherehynny small vibrations in the motor itself are deadened in their course of transmission to the mounting plate 5. Carried Within the cup-shaped casing 1 is a magnetic element 8 having a series of poles 9 and preferably laminated, about which are placed windings or field coils 10.

The membeif 8 is fastened to the central.

portion of the cup-shaped member 12 in any suitable manner such as by screws 11.

The eentral portion of the member 1 cm:-

ries a bearing which may take the form of a screw 70 having a rounded and hardened point or the end of the screw may adjustably carry in position a hardened ball. As shown in Figures 2 and 5 the screw is locked in adjusted position by the nut 13. Also carried by member 1 and within the member 8 and. centrally located around the member 12 is a brush holder ring 14 carrying brush holders 15 and brushes 16. The ring 14 can be rotatably adjusted by means of the slots 45 and screws- 16. The brushes are adapted to engage the bars of the commutator 17, the line of the commutator being indicate-d 15 by the dotted lines 18, Figure at. The =ommutator 17 is carried on andfasten'ed to hub 19 in any suitable manner asjby screw 32. The hub 19 is preferably integral with the bottom of the rotatable casin 20 which has 20 a flange 21 that carries amagnetic element 22, the same being fastened to the flange in any suitable manner such as by screws 23. The magnetic element 22 is preferably lam inated and constructed with a series of slots 24 forming pole teeth 25. Located within the slots 24 is preferably a series of coils 26, the number of which is a multiple of the field poles 9, plus or minus one, the field poles being of an even number. The coils 26 are connected to the commutator by suitable leads 27 that are fastened to an insulating member 28 in any suitable manner such as by shellac or varnish, a short commutator riser 29 being used to fasten the leads 27 to the proper bars of the commutator 17. To the central hub 19 is fastened a shaft 30 as by means of a key 31. The end 33 of shaft 80 is adapted to run on the bearing 70 and is therefore preferably hardened and ground to a smooth surface. The outer end 34 of shaft. 30 is adapted to receive the sound record support body 35 that carries a sound record 86. L The casing 20 with all of the parts assembled therein as just described, and illustrated in Figures 6 and 7, is adapted to fit within the cup-shaped casing; 1 and to rotate therein and after the said casing 20 ."th its parts has been put in a position whereby the pole teeth 25 are in operative relation-with poles 9 and the brushes 16 are uithe commutator 17, then the cover plate 2' carrying a guide bearing is put in ,lace and fastened by means of the screws 5 -1) entering thescrew holes 40 in the easing;- 1. r A; small cover plate 41 is adapted tofit over the pocket 2 as well as around the .c0vo1"-37on the line 42. From this confiiilflhtlQn. shown particularly in Figures 1 and it is een that the moving parts of; the'motot are completely concealed and are pro ected from dust, dirt and mechanical injury. 1 Within the pocket 2 is carried a gov emolmeehanism broadly indicated by the numeral 43. The particular governor mechanism illustrated herein will be made the subject of a separate application and will not be described in detail herein. The governor shaft is operated by a suitable drive member 69 which engages a knurl 1-1 that is turned on the edge of the flange 21.

The frame or mounting plate 5 carries a block 47 preferably of insulating material on which is mounted an electro-magnetic coil 48 to the core of which is attached pole pieces 49 and One of these pole pieces. such as -19, carries a movable armature 5.1. which is normally held in retracted position by means of a spring, such as 52. The mounting plate 5 also supports a switch lever 53, one end of which carries a contact piece 5 1 that is insulated from the lever 53, but adapted to make electrical connec tion between the switch blades and 50. as illustrated diagrammatically in Figure 8. whereby a circuit through the motor is completed, as will be seen. The upper end of the lever 53 carries a brake shoe 57 con structed of any suitable material and is adapted to engage the sound record support body 35. The lower end of the, lever 52% carries a detent 08 which engages the end of the armature 31. so that the lever .73 can not return to its normal position, a i'ter beinc, operated, until the armature 51 has been withdrawn. .This withdrawal of the arma-- ture'51 may be accomplished in two ways; first, automatically by the tone arm 59 engaging a contact (30. as described in my eopending application 3. N. 533,800, filed October 27, 1919, whereby a circuitthrmurh the electromagnet -18 is completed (see Figure 8), and the armature 51 drawn up thereby allowing the spring 61 (see Figure 2), to turn the switch lever 53 to the position shown in Figure 3, and thereby more the brake shoe 57 into engagement with the member 35, stoppin the bhonograph. If it is desired to stop the phonograph motor at any other time this may b done by means of a push button 62 which in turn will operate the member having a cam surface ('33. in such a way that this will push the al'ma ture 51 out of engagement with the detent 58, allowing spring 61 to return the lever 53 to a position as previously described.

As indicated in Figure 8 the winding 26 is illustrated by the motor armature 26 and the field windings 10 are shown connected in series. For the purpose of regulation, the action of resistance 64 is controlled by the governor 43 in accordance with the speed of rotation of the governor. Connections to the motor are made from the terminals 65, 66 and 67. As illustrated in Figure 9 a relay 68 is adapted to cut in or out of the motor circuit a portion of the resistance 64 at the proper time, wl'iereby the governor 43 switches in or out of the motor circuit more or less resistance, according to the position winee's of the relay 68. As indicated in Figure 10 the field Winding 10 is shunted by the resistance G4; and the governor 5L3 controls a port of the said shunt resistance.

It should be noted that the arrangement of the coils and the ratio of the number of poles in the pole pieces insures a positive starting of the armature from any stationary position of the armature, as Well as insures u quiet operation of the motor during its running.

Other schemes of internal connections will be cleerly'apperentto one skilled in the art and I do not wish to be limited to the manner of connections as illustrated. It

will slso be apparent that numerous changes can be made in the details of the various edits without deiertin from the s'iirit l i t, 5 l

and the scope oi the appended my invention claims.

Having thus described my invention, what I claim is 1. A phonograph driving mechanism com prising in combination, a casing opening upward and having a bearing in the bottom thereof, it cover to close the casing opening and carrying; guide bearing, e magnetic field tructure supported within said casing and having a plurality of poles with exciting windings thereon, a rotatable member having a shaft. one end cooperating with the windings and coils, en

ing the speed of rotation of the rotatable bearing in said casing" and the other end extendin 51 through the cover guide bearing and adapted to receive at sound record support body, said rotatable member'ful'tluer consistin; of; e cup-shaped body fitting within said casing and having a central portion fastened to s: d shaft, magnetic element fastened to the said cupebeped body, said magnetic element having slots forming pole teeth tberebctween arranged in its inner po riphery and :1 series oi. armature coils erranged in said slots so {13 to embrace a plurality of said pole teeth, a commutator for said armature coils curried on said control portion, means for appi ing'current to said 4 meane for govern;

member.

2. A phonograph driving mechenismcom prising in combination, a casing, opening upward and having it bearing centrally located in thebottom thereof, a. cover to close the casing opening and carrying a guide beering, 'a magnetic field structure supported from the bottom of said casing and having a plurality of outwerdlyextending pole pieces witli exciting windings thereon, at brush holder with commutator brushes carried thereon supported by the bottom of said cesing within said field structure, a rotatable member consisting of e cu'p-slioieed body fitring within said casing and carrying mature ring having slots forming inwardly projecting pole teeth to cooperate with said field poles With overlapping coils disposed in said slots, said cup-shaped body having a central portion forming a, seat for a commulocated bearing and the other end extending through the cover guide bearing and adept ed to receive a'sound record on )port body, means for pessing current to Sei first winding and armature coils via the commutator and means for re uletin the s eed of rotation of the rotatable member.

3. A phonograph driving mechanism com prising in combination, a flat bottomed cupshoped casing carrying a magnetic field structure on the bottom of the cup spaced between the center and side walls thereof, a plate covering the casing opening and carrying a shaft bearing an armature structure carried by a movable flat topped cup-shaped casing fitting: within the first mentioned casing and having a shaft with one end seated in :1 beeringicarried by the first casing. soil shut!" having: one end extending through the bearing: in, the cover plate and beyondthc movable casing and carrying a sound rec ord support body.

4. A phonograph driving mechanism comprising in combination, a cup-shaped casing having): a; side pocket extending laterally only of the casing, a magnetic field structure carried by said casing, a rotatable cupsbeped member positioned within said cesing in an inverted position and having a sbeft with one end supported by a. bearing carried by said casing" and the other end adopted to receive a sound record support body, said rotatable member carrying an ormature structure including a commutator therefor and a speed overnor device for controlling the speed oi said rotatable member positioned in said pocket and operated by said rotatable member. I

5. Aphonogruph driving mechanism comprising in combination, a cupshaped casing having. a side pocket, both opening: upward. a beorinsr centrally located in the ho tom of cup-shaped member positioned within said casing in an lnverted position and having a shaft with,one end positioned in said been ing, a plate fitting over and around said rotutuble member and having a guide bearing For the other end of said shaft which extends therctbrough and adapted to receive a sound record support body, a circular urnuilure structure fastened to the side Walls of sold rotatable member and having t commutator centrally located around said shaft-{arid u speed governor for controlling the speed of t rotatable member positioned in said I a. D,

pocket and chive/n frmn the ouier surfasa of 3;1'102 iizeclmnf.

casing cover rig its opening the station v as; W631i as the rotatable casing; and 521% mute cover pink covering said governs? wclmnism.

8. A 110110 l1 (l 131g mecliz'z'uism cgiinprising in 3l1i' ied casing hzzvi with a, guide 011.- L ing a bearing I lis boiiiom pal'v and ham iil'ri packet 5:, semnd cup-shaped casing ii'alescopinp; within Elie first and supported Limmim b :i shaft having one and positioned in fjaifl Mining; and

the silver and @xiiiuling through the gi'iiile bushing and (fillfl'j'lflfl (L Found remind support 2?, magnetic: field a "iicim'e fastened no he boil- 3171 of Ll'lft first v: 541

armature struc si carried the and (using in coop-ai'ntiio relation with said field structure :1 governor ZDGChIl'IXiN positioiiierl in said poc lzct 22ml OPE eil i, the saceiiiid casing, a savor "1 1 2:0 lihe ari i a mzide llmll'li, v "l v iusti'ib field v uctbiii'e, m1 rial by he smcmil fllhii" (P5 :1 (minimum peeks: and

mechanism comprising in cembination, two telescoping casings, a cover plate for the miter casing, (me casing; suppoi ted by the other and the cow! plate and rotatablethemin and adapted b0 carry a sound record sup portbody, a magnetic exciting field stifuc- Lure carried by one casing and a co-acrfiing armature structure in the stile? casing, "l mou l plate and lugs 01: the statimmr iasinp' for atiucliing the same to the H'KHHK'L" ing piaina.

l1. self starting}; phoimgrapi'i driving meclmnisii comprising; in combination; a sizatimwry flan bottem shaped cup casing lmvi' a, pla e closing: its epieni11,; with a magnetic elemeii having: 3, pk 'zilifiy (if individual polgs with coils ii lmrcsn curried Within the casing around iv can'imil p01- 1011 :1 rututable 1; jposi'lamnerl WllOllY Within the fiist raising and having a shaft 1'01'111 aim] at one oncl in the bottom of the first casing and guide the other end by the cave! plate and ad t (l to carry a sound record. suppnrt boil outside the plate, a miwitietic Element carried by sz'ikl rotatable casing and having a niurzility of "pole teeth mztnqlin into coop \ii've pe itimmliip with goies aniihaving evils embracing pole teeth iii. number .'-:cee(li1'1g ,in length the length of one of. S2-ld p( 1S whereby rotative torque is pmflucecl between i he pales and pnlz at any position of the rotatable (ins-ing- 26L cammut-al'oz' "for." direct-in m1- r'eni; to d from rota-m 1L coils.

i2. ll phonograph mmlmnism mmprisi 'ii in ccim'biimii czsing's with dbtl i 521 casings pq oja ting th e'iavfms" wlwil telescoping; and c0znp concealed l pia' za 11116 m sppmxt cover 4" ii'n'ough 35m COW)? res: ii support body tum sfmctimi casing in c riepex'zi. Q n crime.

nmting phonrigmph comprismg;- plate, i, sfia'itionm'y casing carried 3?, l pin and :3, ci'ivei' plate for missing" 5m stationary casing, rotzimbie said cz'isiimq, shal connectsxl 21ml hi'wkig a mai slimloniwv owing; s ncl pro: .m "l'illfllifgfl a guide b'm-iiiizxg in Mid.

11 seaui'eil t0 l main heir-111g of pc- Wilii and that th the sainemay conform theth outside of said first named and having an odd numb the stationary poles, and

It is hereby 1923, upon the an improvement in requlrmg correction mner casing shaft.

the operating e said Letters Signed and sealed [sun] certified thzit in Le application of Phonographs peratz'n g shaft being adapted to carry ture L positioned in the outer magnetic element cated within said stationary magnetic eleer of poles -1I1 exto embrace more ture.

a commutator loment for directin rotatable coils. In testimo g current to and from Sll'id EDWARD J. TOMLINSON.

Certificate of "Correction. Y

Edward J Tomlmson,

4,v after 1 Patent should be read with v 7 Acting appears :in the ine-2 insert the following as claim 6:

support body, stationary amng and a-coaating e record of the case in the Patent Ofiice. this 18th day of- December, A; D.

ttersPatent No ..1,473,3 63, grz'mtedNovember 6,

of- Newark, New Jersey, for

printed specification oasin mid a magnetic fie strum ammwure c'awieei by nary casing oovcfing g aguide bushing for this correction therein that KARL FENN IN G, Commissioner of Patents. 

